These scams often involve social engineering, email spoofing, and fraudulent communication that appear to come from legitimate sources such as executives, vendors, or legal advisers.

How a BEC Attack Works

Cybercriminal groups behind BEC schemes often run multiple campaigns targeting organisations across different industries. They typically focus on large enterprises and high-value individuals, such as executives or finance officers, who have the authority to move money or approve sensitive transactions.

A common example involves attackers pretending that a company is engaged in a confidential merger or acquisition.
They impersonate senior executives (such as the CEO) and external legal counsel, convincing the victim to authorise an urgent payment or share privileged information under the guise of secrecy.

Key tactics include:

• Impersonation of internal and external figures — posing as both company leadership and external advisors.
• Urgency and confidentiality — emphasising secrecy to discourage verification.
• Dual communication channels — combining email with WhatsApp or other platforms to avoid detection and reduce the audit trail.

The scam typically unfolds in two stages:

1. Initial contact from a fake senior executive requesting assistance with a confidential project.
2. Follow-up by an impersonated “lawyer” who finalises details and provides fraudulent banking information.

Why BEC Attacks Are So Dangerous

Unlike typical phishing campaigns, BEC attacks rely less on malware and more on psychology. They exploit trust, authority, and urgency to trick victims into bypassing standard verification processes.
A single successful BEC incident can result in substantial financial losses and expose sensitive business relationships.

How to Prevent Business Email Compromise

Organisations can reduce their exposure to BEC through layered defences combining technology, policy, and awareness.

1. Enable Multi-Factor Authentication (MFA)

MFA adds a vital layer of protection by requiring an additional form of verification beyond a password. This significantly reduces the risk of account takeover through stolen credentials.

2. Run Ongoing Security Awareness Training

Employee education is one of the most effective defences.
Simulated phishing exercises and real-world examples help staff recognise warning signs of BEC, such as spoofed addresses, unusual requests, or unexpected urgency.

3. Enforce a Strong Password Policy

Implement strict password management rules, including complexity requirements, rotation schedules, and prohibiting password reuse across accounts.
Encourage the use of password managers and prohibit credential entry on unverified sites.

4. Limit the Information Shared Online

Attackers often gather intelligence from public sources such as LinkedIn, social media, or company websites.
Encourage employees to avoid sharing job details, hierarchy information, or travel schedules that could be used for social engineering.

5. Strengthen Phishing Defence Capabilities

Even with strong security controls, malicious emails can slip through.
Implement a clear, simple reporting system for suspicious emails and ensure your security team can quickly investigate and quarantine potential threats.

How to Recognise a BEC Attempt

Watch for these red flags:

• Unfamiliar or misspelled sender addresses
• Hyperlinks leading to suspicious domains
• Urgent or secretive requests involving payments or data transfers
• Poor spelling, unusual grammar, or inconsistent tone
• Suspicious attachments (e.g., “file.txt.exe”)
• Low-quality company logos or formatting

When in doubt, verify through a secondary communication channel, such as a phone call or internal messaging system, before taking action.

Staying Vigilant Against BEC

BEC remains one of the costliest cyber threats to businesses worldwide, exploiting trust more than technology.
Protecting against it requires a combination of security awareness, robust authentication, and strict internal verification procedures.

By staying cautious, verifying unusual requests, and maintaining layered defences, organisations can significantly reduce their risk and prevent costly fraud attempts.